EP 2189028 A4 20110126 - SYSTEM AND METHOD FOR MULTI-STAGE ZERO FORCING BEAMFORMING IN A WIRELESS COMMUNICATIONS SYSTEM
Title (en)
SYSTEM AND METHOD FOR MULTI-STAGE ZERO FORCING BEAMFORMING IN A WIRELESS COMMUNICATIONS SYSTEM
Title (de)
SYSTEM UND VERFAHREN FÜR MEHRSTUFIGE NULL-FORCIERENDE STRAHLFORMUNG IN EINEM DRAHTLOSEN KOMMUNIKATIONSSYSTEM
Title (fr)
SYSTÈME ET PROCÉDÉ DESTINÉ À LA FORMATION DE FAISCEAUX PAR FORÇAGE À ZÉRO À ÉTAPES MULTIPLES DANS UN SYSTÈME DE COMMUNICATIONS SANS FIL
Publication
Application
Priority
- CN 2009071185 W 20090407
- US 4267508 P 20080404
- US 41847609 A 20090403
Abstract (en)
[origin: US2009252091A1] A system and method for multi-stage zero forcing beamforming in a wireless communications system is provided. A method includes receiving feedback information from each mobile station (MS) in a first plurality of mobile stations (MSs), selecting a first MS from the first plurality of MSs, and broadcasting information related to the first MS to the first plurality of MSs. The first MS having a largest value of a first metric based on the feedback information received from the first plurality of MSs. The method also includes receiving feedback information from each MS in a second plurality of MSs, selecting a second MS from the second plurality of MSs, and creating a precoding matrix from feedback information from the first MS and the second MS. The second MS having a largest value of a second metric based on the feedback information received from the second plurality of MSs.
IPC 8 full level
H04B 7/06 (2006.01)
CPC (source: EP US)
H04B 7/0626 (2013.01 - EP US); H04L 1/0026 (2013.01 - EP US); H04W 16/28 (2013.01 - EP US); H04L 2001/0093 (2013.01 - EP US); H04W 48/08 (2013.01 - EP US); H04W 48/16 (2013.01 - EP US); H04W 88/08 (2013.01 - EP US)
Citation (search report)
- [XY] EP 1737141 A2 20061227 - SAMSUNG ELECTRONICS CO LTD [KR], et al
- [Y] US 2007160162 A1 20070712 - KIM SUNG-JIN [KR], et al
- [A] US 2007066332 A1 20070322 - ZHANG CHENGJIN [US], et al
- See references of WO 2009121311A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2009252091 A1 20091008; US 8351455 B2 20130108; EP 2189028 A1 20100526; EP 2189028 A4 20110126; EP 2189028 B1 20130612; WO 2009121311 A1 20091008
DOCDB simple family (application)
US 41847609 A 20090403; CN 2009071185 W 20090407; EP 09726631 A 20090407